US11653311B2ActiveUtilityA1

Full power uplink transmission enhancement

94
Assignee: APPLE INCPriority: Feb 12, 2020Filed: Feb 12, 2021Granted: May 16, 2023
Est. expiryFeb 12, 2040(~13.6 yrs left)· nominal 20-yr term from priority
Inventors:Haitong SunYushu ZhangWei ZengDawei ZhangIsmael Gutierrez GonzalezGhaith N. HattabYuchul KimHong HeWeidong YangChunxuan YeChunhai YaoOghenekome OteriYeong-Sun Hwang
H04L 5/0023H04L 5/0051H04W 52/146H04W 72/1268H04B 7/0456H04W 8/24H04B 7/0639H04W 52/18H04W 72/51H04W 52/247H04B 7/0628H04W 52/325H04W 52/42H04W 72/23H04W 52/281H04W 52/58H04W 72/048H04W 72/042
94
PatentIndex Score
3
Cited by
15
References
20
Claims

Abstract

A method for operating user equipment (UE) includes generating, by the UE, a transmit precoding matrix indicator (TPMI) list including one or more TPMIs selected from a set of available TPMIs stored at a base station (BS). Data indicative of the TPMI list is transmitted to the BS. An index of the TPMI list is transmitted to the BS. Downlink control information (DCI) is received from the BS including an indication of at least one TPMI from the TPMI list based on the index. Uplink data is transmitted to the BS on a physical uplink shared channel (PUSCH) using the at least one TPMI.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A method for operating user equipment (UE), comprising:
 transmitting, to a base station (BS), a capability message for the UE, the capability message including both a first capability for a first number of ports and a second capability for a second number of ports, the second number of ports being less than the first number of ports; 
 receiving, from the BS, a radio resource control (RRC) message for configuring the UE for full power uplink transmission, wherein the RRC message includes an indication of at least one sounding reference signal (SRS) resource including the second number of ports; and 
 transmitting, to the BS, uplink data using a physical uplink shared channel (PUSCH) based on the RRC message. 
 
     
     
       2. The method of  claim 1 , wherein the first capability comprises an indication of one or more transmit precoding matrix indicators (TPMIs) for full power transmission using the first number of ports, and wherein the second capability comprises an indication of one or more TPMIs for full power transmission using the second number of ports. 
     
     
       3. The method of  claim 1 , wherein the second capability comprises an indication of a TPMI group for the second number of ports, and wherein the SRS resource is mapped to the TPMI group. 
     
     
       4. The method of  claim 1 , wherein the RRC message configures the UE for full power uplink transmission based on the second capability. 
     
     
       5. The method of  claim 1 , wherein the RRC message includes an indication of a second SRS resource with the first number of ports. 
     
     
       6. The method of  claim 1 , wherein of the second capability for the second number of ports that is less than the first number of ports comprises an indication that the UE supports full power uplink transmission using the second number of ports. 
     
     
       7. The method of  claim 1 , wherein of the second capability for the second number of ports that is less than the first number of ports comprises an indication that the UE supports full power uplink transmission for multiple transmit precoding matrix indicators (TPMIs) of a particular rank or for a particular TPMI of the particular rank. 
     
     
       8. A user equipment (UE), comprising:
 one or more processors; and 
 memory storing instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising: 
 transmitting, to a base station (BS), a capability message for the UE, the capability message including both a first capability for a first number of ports and a second capability for a second number of ports, the second number of ports being less than the first number of ports; 
 receiving, from the BS, a radio resource control (RRC) message for configuring the UE for full power uplink transmission, wherein the RRC message includes an indication of at least one sounding reference signal (SRS) resource including the second number of ports; and 
 transmitting, to the BS, uplink data using a physical uplink shared channel (PUSCH) based on the RRC message. 
 
     
     
       9. The UE of  claim 8 , wherein the first capability comprises an indication of one or more transmit precoding matrix indicators (TPMIs) for full power transmission using the first number of ports, and wherein the second capability comprises an indication of one or more TPMIs for full power transmission using the second number of ports. 
     
     
       10. The UE of  claim 8 , wherein the second capability comprises an indication of a TPMI group for the second number of ports, and wherein the SRS resource is mapped to the TPMI group. 
     
     
       11. The UE of  claim 8 , wherein the RRC message configures the UE for full power uplink transmission based on the second capability. 
     
     
       12. The UE of  claim 8 , wherein the RRC message includes an indication of a second SRS resource with the first number of ports. 
     
     
       13. The UE of  claim 8 , wherein of the second capability for the second number of ports that is less than the first number of ports comprises an indication that the UE supports full power uplink transmission using the second number of ports. 
     
     
       14. A method for a base station (BS), comprising:
 receiving, from a user equipment (UE), a capability message for the UE, the capability message including both a first capability for a first number of ports and a second capability for a second number of ports, the second number of ports being less than the first number of ports; 
 transmitting, to the UE, a radio resource control (RRC) message for configuring the UE for full power uplink transmission, wherein the RRC message includes an indication of at least one sounding reference signal (SRS) resource including the second number of ports; and 
 receiving, from the UE, uplink data using a physical uplink shared channel (PUSCH) based on the RRC message. 
 
     
     
       15. The method of  claim 14 , wherein the first capability comprises an indication of one or more transmit precoding matrix indicators (TPMIs) for full power transmission using the first number of ports, and wherein the second capability comprises an indication of one or more TPMIs for full power transmission using the second number of ports. 
     
     
       16. The method of  claim 14 , wherein the second capability comprises an indication of a TPMI group for the second number of ports, and wherein the SRS resource is mapped to the TPMI group. 
     
     
       17. The method of  claim 14 , wherein the RRC message configures the UE for full power uplink transmission based on the second capability. 
     
     
       18. The method of  claim 14 , wherein the RRC message includes an indication of a second SRS resource with the first number of ports. 
     
     
       19. The method of  claim 14 , comprising:
 determining that the UE supports full power uplink transmission using the second number of ports based on receipt of the second capability for the second number of ports that is less than the first number of ports. 
 
     
     
       20. The method of  claim 19 , wherein determining that the UE supports full power uplink transmission using the second number of ports includes determining that the UE supports full power uplink transmission for multiple transmit precoding matrix indicators (TPMIs) of a particular rank or for a particular TPMI of the particular rank.

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